Question

what will be the percentage increase in volume of a gas whose pressure in decreased 40% keeping mass and temperature both constant?​

Answer 1

Step-by-step explanation:

ANSWER

If initial temperature is T, final temperature is T+

100

40

×T=1.4T

If initial volume is V, final volume is V−

100

20

×V=0.8V

Applying the gas equation, we get

T

1

P

1

V

1

=

T

2

P

2

V

2

If initial pressure is P, final pressure =

0.8V×T

1.4T×V×P

=1.75P

∴ Increase in pressure =1.75−1=0.75

Percentage increase =0.75×100=75%